Tests of Large Airfoils in the Propeller Research Tunnel, Including Two with Corrugated Surfaces (1930)
NASA Technical Reports Server (NTRS) · leaf 10
9 TESTS OF LARGE AIRFOILS IN THE PROPELLER RESEARCH TUNNEL … Figure 9 -Clark Y, corrugated, B. Aspect ration 6. Free air Figure 11.—N. A. C. A. M-C, metal covered, painted. Aspect ratio 6. Free air CL CD 2.2 .56 2.2 .56 2.0 .52 2.0 .52 1.8 .48 1.8 .48 1.6 .44 1.6 .44 D z? 1.4 .40 1.4 .40 28 28 1.2 .36 1.2 .36 24 24 1.0 .32 1.0 .32 20 20 .8 .28 .8 .28 16 16…
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